When you upgrade FRP from version 5.2.x or later and reboot, the User-Based Policies are no longer applied to some logged-on users.
The FRP user log records the errors below:
[6500] P:6500,T:5820 FF_ma_policy_translator::FF_ma_policy_translator[0](user based policies)
[6500] P:6500,T:5820 MfeFfMaProvider! MA-LOG: frp, 5 - START: *** Get upb for <domain\user>
[6500] P:6500,T:5820 MfeFfMaProvider! MA-LOG: frp, 5 - Error getting ubp <1601>
[6500] P:6500,T:5820 MfeFfMaProvider! MA-LOG: frp, 5 - END: *** Finished processing ubp for <domain\user>
[6500] P:6500,T:5820 FF_ma_policy_translator::~FF_ma_policy_translator[0]
[6500] P:6500,T:5820 FF_ma_policy_translator::FF_ma_policy_translator[0](user based policies)
[6500] P:6500,T:5820 MfeFfMaProvider! MA-LOG: frp, 5 - START: *** Get upb for <domain\user>
[6500] P:6500,T:5820 MfeFfMaProvider! MA-LOG: frp, 5 - Error getting ubp <1601>
[6500] P:6500,T:5820 MfeFfMaProvider! MA-LOG: frp, 5 - END: *** Finished processing ubp for <domain\user>
[6500] P:6500,T:5820 FF_ma_policy_translator::~FF_ma_policy_translator[0]
NOTE: You see this error only after you follow "Solution 2" (user mode tracing) from
KB82192 - How to enable debug logging locally on the client.